Tertiary filtration in small wastewater treatment plants

被引：7
|
作者：
Naddeo, V. [1 ]
Belgiorno, V. [1 ]
机构：
[1] Univ Salerno, Dept Civil Engn, I-84084 Fisciano, SA, Italy
来源：
WATER SCIENCE AND TECHNOLOGY | 2007年 / 55卷 / 07期
关键词：
particle size distribution; rotating disk filter; sand filter; wastewater filtration;
D O I：
10.2166/wst.2008.148
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Tertiary filtration can be proposed in small wastewater treatment plants with impact on protected water bodies. Rotating disk filters may be adopted, in respect to conventional sand filters, when low availability of space and low investment costs are the prevailing conditions. The overall objective of this research was to evaluate the filtration efficiency of rotating disk filters; to compare effectiveness with traditional sand filters; to analyse thoroughly the importance of particle size distribution in wastewater tertiary filtration. In the experimental activity, conventional wastewater quality parameters were investigated and particle size distribution (PSD) was characterized to discuss the filter effectiveness. The effect of design and operation parameters of tertiary filters were discussed related to particle removal curves derived from particles counts. Analysis of particle size distribution can be very useful to help comprehension of filtration processes, design of filtration treatments and to decide the best measures to improve filter performance.
引用
收藏
页码：219 / 225
页数：7
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